The Core (stylized The CORE), which consists of TD Square, the Holt Renfrew building, and the former Calgary Eaton Centre, is the dominant shopping complex located in the downtown core of Calgary, Alberta, Canada. It spans three city blocks and contains approximately 160 retailers on four levels. The property also contains six major office towers (TD Canada Trust Tower, Home Oil Tower, Dome Tower, and the historic Lancaster Building. It is the hub of downtown Calgary's +15 skywalk system, and as such is the busiest shopping centre in the city by pedestrian count, with around 250,000 visitors passing through each week. The centre's architectural focal point is a vast suspended glass skylight which spans the length of the complex. As of October 29, 2010, The Core offers free evening and weekend parking at its underground lots. The Core is bounded by 8th Avenue SW (Stephen Avenue pedestrian mall) on the south, 7th Avenue SW (LRT Corridor rapid transit line) on the north, and extends above 3rd Street SW (Barclay Parade) and 4th Street SW. The mall is directly connected to the neighbouring retail complexes of Bankers Hall (south) and Scotia Centre/Hudson's Bay Store (east) via the +15 skywalk system. It also contains the Devonian Gardens, a unique glass-enclosed indoor botanical park, which reopened to the public on July 27, 2012, after a complete renovation. History The T. Eaton Co. opened its original Calgary department store on the site in 1929. In 1977, it was joined by TD Square (originally named Oxford Square) to the east. TD Square, an office and shopping complex, covered four levels over an entire block and contained the original Devonian Gardens indoor botanical garden. In 1990, Eaton's store was relocated into a new building one block west and a four-level shopping centre, the Calgary Eaton Centre, was built on its original site. Following the closure of the Eaton's chain in 2002, Sears acted as an anchor store until 2008 when it was closed to make way for Holt Renfrew's expansion. The combination of the two centres resulted in the property being rebranded “The Core”, however the property is still referred to as "The Core - TD Square". Redevelopment The centre underwent a three-year, multimillion-dollar redevelopment project, which was completed in 2011. The redevelopment unified the complex under a continuous , suspended glass skylight. The skylight, completed in November 2009, is the largest point-supported structural glass skylight